Merge pull request #1851 from modflowpy/v3.4.0

Release 3.4.0

Author: wpbonelli

.docs/Notebooks/array_output_tutorial.py

@@ -0,0 +1,151 @@
+# ---
+# jupyter:
+#   jupytext:
+#     notebook_metadata_filter: all
+#     text_representation:
+#       extension: .py
+#       format_name: light
+#       format_version: '1.5'
+#       jupytext_version: 1.14.5
+#   kernelspec:
+#     display_name: Python 3 (ipykernel)
+#     language: python
+#     name: python3
+#   metadata:
+#     section: flopy
+#     authors:
+#       - name: Jeremy White
+# ---
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# # Formatting ASCII output arrays
+#
+# ### Configuring numeric arrays written by FloPy
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# load and run the Freyberg model
+
+import os
+
+# + pycharm={"name": "#%%\n"}
+import sys
+from tempfile import TemporaryDirectory
+
+import matplotlib as mpl
+import matplotlib.pyplot as plt
+import numpy as np
+
+import flopy
+
+# Set name of MODFLOW exe
+#  assumes executable is in users path statement
+version = "mf2005"
+exe_name = "mf2005"
+mfexe = exe_name
+
+# Set the paths
+loadpth = os.path.join("..", "..", "examples", "data", "freyberg")
+temp_dir = TemporaryDirectory()
+modelpth = temp_dir.name
+
+# make sure modelpth directory exists
+if not os.path.isdir(modelpth):
+    os.makedirs(modelpth)
+
+print(sys.version)
+print("numpy version: {}".format(np.__version__))
+print("matplotlib version: {}".format(mpl.__version__))
+print("flopy version: {}".format(flopy.__version__))
+
+# +
+ml = flopy.modflow.Modflow.load(
+    "freyberg.nam", model_ws=loadpth, exe_name=exe_name, version=version
+)
+ml.model_ws = modelpth
+ml.write_input()
+success, buff = ml.run_model(silent=True, report=True)
+if success:
+    for line in buff:
+        print(line)
+else:
+    raise ValueError("Failed to run.")
+
+files = ["freyberg.hds", "freyberg.cbc"]
+for f in files:
+    if os.path.isfile(os.path.join(modelpth, f)):
+        msg = "Output file located: {}".format(f)
+        print(msg)
+    else:
+        errmsg = "Error. Output file cannot be found: {}".format(f)
+        print(errmsg)
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# Each ``Util2d`` instance now has a ```.format``` attribute, which is an ```ArrayFormat``` instance:
+
+# + pycharm={"name": "#%%\n"}
+print(ml.lpf.hk[0].format)
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# The ```ArrayFormat``` class exposes each of the attributes seen in the ```ArrayFormat.___str___()``` call. ```ArrayFormat``` also exposes ``.fortran``, ``.py`` and ``.numpy`` atrributes, which are the respective format descriptors:
+
+# + pycharm={"name": "#%%\n"}
+print(ml.dis.botm[0].format.fortran)
+print(ml.dis.botm[0].format.py)
+print(ml.dis.botm[0].format.numpy)
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# #### (re)-setting ```.format```
+#
+# We can reset the format using a standard fortran type format descriptor
+
+# + pycharm={"name": "#%%\n"}
+ml.dis.botm[0].format.free = False
+ml.dis.botm[0].format.fortran = "(20f10.4)"
+print(ml.dis.botm[0].format.fortran)
+print(ml.dis.botm[0].format.py)
+print(ml.dis.botm[0].format.numpy)
+print(ml.dis.botm[0].format)
+# -
+
+ml.write_input()
+success, buff = ml.run_model(silent=True, report=True)
+if success:
+    for line in buff:
+        print(line)
+else:
+    raise ValueError("Failed to run.")
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# Let's load the model we just wrote and check that the desired ```botm[0].format``` was used:
+
+# + pycharm={"name": "#%%\n"}
+ml1 = flopy.modflow.Modflow.load("freyberg.nam", model_ws=modelpth)
+print(ml1.dis.botm[0].format)
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# We can also reset individual format components (we can also generate some warnings):
+
+# + pycharm={"name": "#%%\n"}
+ml.dis.botm[0].format.width = 9
+ml.dis.botm[0].format.decimal = 1
+print(ml1.dis.botm[0].format)
+
+# + [markdown] pycharm={"name": "#%% md\n"}
+# We can also select ``free`` format.  Note that setting to free format resets the format attributes to the default, max precision:
+
+# + pycharm={"name": "#%%\n"}
+ml.dis.botm[0].format.free = True
+print(ml1.dis.botm[0].format)
+# -
+
+ml.write_input()
+success, buff = ml.run_model(silent=True, report=True)
+if success:
+    for line in buff:
+        print(line)
+else:
+    raise ValueError("Failed to run.")
+
+# + pycharm={"name": "#%%\n"}
+ml1 = flopy.modflow.Modflow.load("freyberg.nam", model_ws=modelpth)
+print(ml1.dis.botm[0].format)